18 Works by maximum_happyness
Listing Works
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autonomy, adorably by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime & Manga)
19 Apr 2026
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Summary
Welcome to the Yandere Simulator Wiki!
-♥︎-
Yandere Simulator is a stealth game about stalking a boy and secretly eliminating anyone who has a crush on him, while maintaining the image of an innocent schoolboy.
You play as Yandere-kun, striving to eliminate the first week’s rival, Kanroji Mitsuri!
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(It hurts.)
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Kyouka hums as she runs her fingers through his hair, the boy slumped against her, fast asleep.
In the Port Mafia, peaceful moments like these are rare.
It’s nice.
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Or: Age-swap AU with Kyouka, picking up strays, and routine.
Series
- Part 2 of age-swap!!
- Language:
- English
- Words:
- 1,841
- Chapters:
- 1/1
- Kudos:
- 7
- Hits:
- 90
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Summary
Feathers grow on his throat and chest, hot and stuffy under his turtleneck and jacket.
Pix sits in silence for a moment, calculating his chances of discovery if he removes his shirt, before deciding that if there was an intruder in his apartment to see, he would have bigger problems to deal with than feathers.
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Or: The Recap Crew are overpowered self-inserts, the Hermits make good entertainment, and Lore.
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the world keeps growing and the words keep going by maximum_happyness
Fandoms: Empires SMP, Life Series | 3rd Life SMP Series
11 Dec 2025
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It was sudden, small. Just five names disappearing from a list.
It’s not anymore, not when the world is breaking to pieces. Not when his soul aches with loss, not when it feels like his own flesh has been gouged out in their absence.
He looks, but cannot find.
He endures. He has to.
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Or: fWhip’s an admin, but Last Life took his players and his world is falling apart. He’s having a terrible time.
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the fog of your mind (blocks out the sights) by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
06 Nov 2025
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Summary
Soot black hands drop unceremoniously to his brother’s sides, his gaze shifts, blank and unfocused, and all that is left is a doll.
Soulless. Perfect.
Wrong.
Distress wells up in him as he tries desperately to catch his gaze.
…is that what Muichiro feels? Is that what you look like?
You do not quite know if you care.
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Or: Yuichiro thinks, feels, and sinks further into the fog.
Series
- Part 6 of roleswap au my beloved
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amongst the stars (as you should be) by maximum_happyness
Fandoms: Naruto (Anime & Manga)
26 Oct 2025
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Summary
Shino makes a habit of thinking.
He thinks of himself, and thinks that he is caged, a plant in a walled garden which sees the sky but never the world.
He thinks about Kiba, and thinks that he should be free.
He thinks it’s worth it.
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Or: Shino has thoughts about his best friend, which eventually spiral into thoughts of promises and the stars.
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won’t you follow me home, fox-child? by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
01 Oct 2025
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Summary
Haseiko’s collection of children starts simply.
A girl, with familiar features.
There is a boy too, but later.
They start a pattern.
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Or: Demon Giyu really misses his friends. Kidnapping’s the optimal solution, right?
Series
- Part 5 of roleswap au my beloved
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the colour of mourning by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
28 Sep 2025
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The sun sets, and with a beat of her wings, a kasugai crow takes off.
She flies fast, not because her life is on the line, but because it is her master’s.
Perhaps, if she is fast enough, she can save him.
As she leaves, she hears the sound of the gate creaking open. Dread shoots through her chest, and she flies even faster.
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Or: A crow flies, heralding the death and dishonour of the only person that matters.
Series
- Part 4 of roleswap au my beloved
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come home, fox-child by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
27 Sep 2025
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Summary
A fox mask charm returns, this one with turquoise triangles on its right cheek.
Iwata eyes the mask and its creator, but says nothing.
It’s not his business, either way.
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Or: Demon Giyuu has issues. Demon Sanemi is well aware.
Series
- Part 3 of roleswap au my beloved
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headfirst, headstrong by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
26 Sep 2025
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Summary
The Moon Hashira has invited Kamado Nezuko to his estate.
It’s probably an important conversation to have, what with your twin pairs of hanafuda earrings, yet you get rather… distracted, on the way in.
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Or: First meetings, senses, and rightful concern (courtesy of Inosuke)
Series
- Part 1 of roleswap au my beloved
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red skies and crimson eyes by maximum_happyness
Fandoms: 蜘蛛ですが なにか? | Kumo desu ga Nani ka | So I'm a Spider So What? - Okina Baba
18 Sep 2025
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Summary
You are at war.
Logically, you know this.
It’s didn’t properly sink in until your commander started the battle with a storm of blades.
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Or: The Eighth Army, war, and boyhood.
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mourning mist and evening fog by maximum_happyness
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
10 Sep 2025
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Your little family will come back to an empty estate and letters, addressed to them individually by name. There are letters for the staff too.
You wrote letters for the other Hashira and Oyakata-sama as well. Ginko has them, and she’ll deliver them as soon as night falls.
(Your face turns to porcelain and you’re glad, if only because you’ll never have to fake a smile again.)
It’s peaceful. The sun will set soon, and everything’s just fine.
(Your eyes burn as kanji write themselves in them in golden ink.)
It’ll be fine.
(You don’t regret it. You’re keeping everyone you care about safe, and that’s all that matters.)
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Or: Swap AU, and the Fog Hashira’s turning into Uppermoon 5
Series
- Part 2 of roleswap au my beloved
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balancing on a silver line, with too much lost time by maximum_happyness
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
23 Aug 2025
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Tachihara’s missing, and Black Lizard are being hunted, slow and sadistic.
They’re all wounded. Exhausted. But the Hunting Dogs aren’t slowing down, if anything, they’re closing in on them.
And now all that’s left is the slaughter.
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Or: Gin stole something she probably shouldn’t have, and the Hunting Dogs aren’t out for blood, but for complete and utter erasure.
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Your world is full of spirits and their stories.
You grow up hearing their tales, about other people’s encounters with them.
Your favorite have always been that of the Blues’ though.
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Or: Four parent-child bonds as seen through conversations in death.
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You meet your team warily, anxious because this is your first time in anything even resembling a teaching role.
You will train them to be good shinobi, because you are Yuuhi Kurenai and you are a prodigy. You will not fail, especially not with the Hokage’s faith placed in you.
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Or: Kurenai on being noticed, and the things she does not say.
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me, myself and my dead brother by maximum_happyness
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
27 Dec 2024
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Tachihara Michizou is a Hunting Dog, and Tachihara Shuzen is dead.
He knows that, logically.
But some days, it feels like Tachihara Michizou died at ten, and it is Tachihara Shuzen who dons the uniform and heads out to catch criminals.
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Or: Tachihara Michizou, his dead brother, and his equally dead sense of self.
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He is six, and does not understand why his sister is sorry, does not understand why she asks him, repeatedly, if he is sure about his decision to stay with her.
He nods in reply as she asks again. The routine would continue, until finally, his sister shakes her head, giving in.
His hand in hers, they follow the man in white. The blond girl beside him looks at them without blinking, and he notices that his sister is grasping his hand tighter than usual.
He does not understand why, but follows her lead, squeezing her hand tightly.
He follows her into the world of the dark, and does not look back.
(He would follow her to the ends of the earth if she wanted him to.)
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Or, Akutagawa Ryuunosuke’s life, and what he did and did not understand.
Series
- Part 1 of age-swap!!
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even with the world against us, i’ll still have you by maximum_happyness
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
14 Oct 2024
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In a world where Fyodor wins and Atsushi loses, this is Kyouka’s life with Kenji in the aftermath.